I'm no fan of organized religon, but in the
John Hopkins (University) Medical Letter,
a sidebar listing "Longevity Facts" states:

"Your faith may heal you. Research shows that people
who practice organized religion have a lower incidence
of depression and suicide, substance abuse, and even
hearth disease. They also seem to cope better with life-
threatening illness and recover from sickness and injury
faster than those who are not religiously committed."